Why use a relationship test?
DNA relationship testingcan be used to verify the existence of biological relationships between relatives. Types of relationship tests include Sibling DNA testing which can be used to confirm if alleged siblings are related or not. Relationship tests can also be extended to include other family members such Aunts/Uncles and Grandparents.
Do you share one biological parent, or both biological parents? Or perhaps none? EasyDNA offers siblings DNA testing services to help siblings discover whether they are full siblings, half siblings or no siblings at all.
Twins can either be 'identical' or 'fraternal' and sometimes, the only way to confirm this is through twins DNA testing. Our DNA test for twins can help confirm if siblings are identical twins or not, providing you with 99.99% accurate results in just 5-7 working days
As part of our portfolio of relationship tests the grandparentage DNA test can be used when grandparents need to confirm the biological relationship to their grandchild. This test will show the statistical probability that the grandparents are genetically related to their granchild.
The aunt-uncle DNA test (or avuncular test) will determine whether a genetic relationship exists between aunts and/or uncles and their niece and/or nephew. Avuncular test results will show you a probability of relationship between tested parties.
Y chromosome testing is done when two or more male individuals wish to confirm whether they share the same father or if they have a common paternal relative. This test, carried out exclusively between males, is a highly accurate and conclusive sibling test.
Are you females who would like to know if you share the same biological father? X chromosome testing can provide the answers you want. Using 10 genetic markers and analyzing the X Chromosome profile of two different females, we can determine whether they share the same biological father.
MtDNA testing is the ideal test if you wish to establish whether you and another person or people have the same maternal line, perhaps the same mother, grandmother, great grandmother etc. MtDNA rarely undergoes genetic mutations and thus, offers very accurate results
A genetic reconstruction test is designed to establish if a child is biologically related to direct blood relatives on their father’s side of the family. The test is performed when the father in question cannot be directly involved in the test and a direct father-child paternity test cannot be carried out.
A note about relationship tests
Relationship testing is particularly useful in situations where the alleged father is not available for a standard paternity test and the siblings want to establish whether they share the same father or not. It is also possible to use other members of the family, such as aunts, uncles, nieces or nephews and determine whether there is any biological relationship. These tests are more complex than paternity test; moreover the type of test will depend on who is available for testing and their sex.
Some further reading
We also recommend that you review the following information:
- STR Testing Methodology – Explanation on how STR analysis (an abbreviation for Short Tandem Repeat) is performed. This is one method of analysis we use in our tests and is often carried out for relationship testing.
- How to Interpret the Result of your Relationship Test –This page will explain important terminology and salient aspects of your relationship test results such as the probability of relationship, the combined first order index and much more.
For instructions on how to collect your samples visit our DNA sample collection guide. If you need to submit a sample other than an oral swab, we suggest that you read the information we provide about our DNA forensic testing services.